Aavid-Thermalloy-6399B-3-3-C-W-Bolt-On-Heat-Sink-for-TO-218-TO-220-TO-247-Aavid-Thermalloy-6399B-p-A-high-power-extruded-bolt-on-heat-sink-with-large-radial-fins-and-solderable-shoulder-pins-Suitable-for-use-with-TO-218-TO-220-or-TO-247-type-components-p-Aavid-Thermalloy-6399B-Heat-Sink-for-TO218-TO220-and-TO247-3-3-C-W-Bolt-On-Type